Upper Tribunal Rules On 'Mixed Use' SDLT Property Case

The Upper Tribunal has ruled in favour of HM Revenue and Customs (HMRC) in a recent appeal concerning the classification of land for Stamp Duty Land Tax (SDLT) purposes.

In HMRC v Christopher Brzezicki [2026] UKUT 00125, the court found that the purchase of property including a stream, island, and a residential dwelling should be treated as wholly residential, not mixed-use, for SDLT.

This decision overturns an earlier judgment by the First Tier Tribunal (FTT) and delivers important clarity on what constitutes “grounds” of a dwelling for tax purposes.

The ruling provides guidance for taxpayers, solicitors, and property owners in cases where land forming part of a transaction includes features such as streams or detached parcels.

Background to the SDLT Case

The dispute concerned the purchase of a property comprising a six-bedroom house, a fishing stream, and a separate island, all situated along the River Meon in Hampshire.

Mr Brzezicki, the purchaser, claimed that parts of the land should be classified as non-residential, arguing that the presence of the stream and island meant it was “mixed use” for SDLT.

HMRC disagreed, maintaining that all the land, including the stream and island, formed part of the residence’s grounds and should not be eligible for the lower mixed-use SDLT rate. The transaction’s tax treatment depended on whether the property included non-residential elements at the date of completion.

First Tier Tribunal’s Initial Judgment

At first instance, the FTT found in favour of Mr Brzezicki. The tribunal determined that the stream, referred to as a “carrier stream”, was not operated on a commercial basis but functioned biologically to produce brown trout.

As the stream and the bounded island were not considered to form part of the “garden and grounds”, the land was deemed part-residential and part non-residential for SDLT.

The FTT also highlighted that fishing rights were attached to certain parts of the land and reasoned that the physical separation of the island from the main house due to the stream acting as a barrier meant the land was not contiguous, thus supporting the mixed-use claim.

However, one tribunal member issued a dissenting opinion, suggesting the stream and island should be classified as grounds of the residence.

Grounds for the Upper Tribunal Appeal

HMRC appealed the decision to the Upper Tribunal, arguing that the FTT misapplied the legal tests set out in sections 116(1)(b) and 116(1)(c) of the Finance Act 2003.

HMRC contended that the use and context of the land should be assessed in line with the ordinary understanding of “grounds” attached to a dwelling and that temporary or contingent barriers such as streams do not necessarily disqualify land from being grounds of a property.

The possibility of later commercial use of the stream was examined, but the Upper Tribunal noted the relevant test is applied at the time of transaction completion.

Legal Distinctions for SDLT Purposes

Stamp Duty Land Tax is a progressive tax on property transactions, with higher rates applied to residential property compared to non-residential or mixed-use land.

Determining whether land is classified as residential involves both statutory provisions and the application of case law. The distinction can significantly affect the tax payable by purchasers.

The Finance Act 2003 defines “residential property” in this context, including land forming part of the garden or grounds of a dwelling. The challenge in this case was to interpret whether the separated stream and island could be properly viewed as part of the “grounds”.

Key Points from the Upper Tribunal

In its decision, the Upper Tribunal stated that the FTT had erred on several grounds. The court confirmed the proper assessment should look at whether, according to ordinary meaning, the land in question is attached to and used with the residence by the owners.

The tribunal emphasised that the presence of bridges and the visibility and proximity of the island linked it sufficiently to the house. The stream’s function despite some engineering and biological activity did not constitute commercial use at the transaction date, nor did it prevent the land from serving as residential grounds.

Repairs required to the stream, or later commercial fishing activities, were not relevant to the status at completion. The evidence presented indicated the stream and island were used with the house and formed an integrated part of the property.